The key seal in the sub-pump is made of rubber material. It is soft and delicate. If there are foreign objects such as iron filings and sand in the cylinder hole during the movement, it will cause damage to the cup. The cup loses its sealing performance and may also scratch the cylinder bore, causing the pump to seep and oil. In addition, there are foreign objects in the cylinder bore, which will affect the performance of the brake fluid for a long time. Therefore, the cleanliness in the cylinder bore of the pump is also an important factor in the oil leakage of the pump, and the control of the cleanliness of the cylinder bore should be strengthened.
In the case of individual oil leakage pump faults, the piston is stuck or the piston is eccentric. This phenomenon is mainly caused by the fact that the contact point between the rear rib and the piston is too far from the piston axis when assembled into the assembly. During operation, the piston is moved during operation. The force biased on the axis of the shaft causes the piston to generate an axial moment, causing local friction between the piston and the cylinder bore, causing severe wear on the single side of the piston, losing the guiding function, causing the pump to seep. To solve this problem, the relative height of the brake floor boss and the sub-pump mounting surface, the distance between the sub-pump mounting base and the center of the cylinder bore, the width of the brake shoe and the symmetry of the brake shoe should be controlled.
Another possible reason for the oil leakage of the sub-pump is that the inner diameter of the cup and the piston ring groove are loose or worn, causing the brake fluid to leak from the portion. Therefore, the roughness and diameter of the piston ring groove should be strictly controlled to ensure product quality. Due to the current limitations of the manufacturing level of domestic parts and components, the quality of all control products is still difficult, but it is our hard work to control the quality of parts from the above aspects to meet the technical requirements.
Hebei Xinteli mainly deals with Metals & Hardware products business over ten years. We have much experience in producing and exporting Metal & Hardware products. Our products are organized into five categories: Wire Mesh ; Iron Wires; fence, post &accessories; Nails ; Wrought Iron Products. Wire mesh, also known as wire netting, is amazingly versatile and is easily adapted to almost any application. Xinteli offers a wide selection of woven and Welded Wire Mesh products with various mesh size, openings, thickness, and materials. Fence, post and gate are widely used in Commercial grounds, like: corporation, hotel, supermarket; Private grounds, like courtyard, villadom; public ground, like park, zoo, train station; Road, like highway, railway. Wrought iron products are perfect for decoration, it makes your life more beautiful. Iron wires and nails can be used both in industry and residential area. Possessing tons of experience in manufacture and export, We are a professional partner for international distributors.
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Hebei Xinteli Co., Ltd. , http://www.sinohardwares.com